<!DOCTYPE HTML>
<html>
<!--
Test that when we remove one of a process's frames from the DOM, the process's
priority is recomputed.
-->
<head>
  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
</head>
<body>

<script type="application/javascript;version=1.7">
"use strict";

SimpleTest.waitForExplicitFinish();
browserElementTestHelpers.setEnabledPref(true);
browserElementTestHelpers.enableProcessPriorityManager();

function runTest() {
  var iframe = document.createElement('iframe');
  iframe.setAttribute('mozbrowser', true);
  iframe.src = 'file_MultipleFrames.html';

  var childID = null;
  var iframe2;
  Promise.all([
    expectProcessCreated('FOREGROUND').then(function(chid) {
      childID = chid;
    }),
    new Promise(function(resolve, reject) {
      iframe.addEventListener('mozbrowseropenwindow', function(e) {
        iframe2 = e.detail.frameElement;
        var p = expectMozbrowserEvent(iframe2, 'loadend');
        document.body.appendChild(iframe2);
        resolve(p);
      });
    })
  ]).then(function() {
    // At this point, the child process has been set to FOREGROUND, and the popup
    // opened by file_MultipleFrames has finished loading.
    //
    // Now setVisible(false) the popup frame and remove the popup frame from the
    // DOM.  This should cause the process to take on BACKGROUND priority.
    var p = expectPriorityChange(childID, 'BACKGROUND');
    iframe.setVisible(false);
    document.body.removeChild(iframe2);
    return p;
  }).then(SimpleTest.finish);

  document.body.appendChild(iframe);
}

addEventListener('testready', runTest);
</script>
</body>
</html>
